Frequencies for first 10,000 rows of clmn_num variable in snf_nmrc2540_96_1996_

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0100 |      2,663       26.63       26.63
       0200 |      4,471       44.71       71.34
       0400 |      1,228       12.28       83.62
       0600 |      1,638       16.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018